Auto gain / trim changed?

So I recently noticed that my tracks gains have changed. I don’t know if it’s the auto gain has been adjusted on its own, for example I have always had my trim roughly around 12oclock and I’d have to slightly adjust to provide the correct output volume, but recently I play a track that I know always would have been in that position and it needs turning up quite a lot. I haven’t changed any of my settings so I’m unsure why this has happened. I have been manually changing the auto gain on some songs but I have so many that it would take a long time to do them all individually. I recently updated rekordbox to the newest version so maybe something was changed through this? I use the ddj 1000 Any suggestions would re analysing my entire library possibly change this?